void main(){    while (1) {        /* set speed of left motor based on right eye */        motor(LEFT_MOTOR, normalize(analog(RIGHT_EYE)));        /* set speed of right motor based on left eye */        motor(RIGHT_MOTOR, normalize(analog(LEFT_EYE)));                /* display eye sensors on LCD screen */        printf("LEFT=%d RIGHT=%d\n", analog(LEFT_EYE),               analog(RIGHT_EYE));        sleep(0.1);    }}